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Subcutaneous Panniculitis-Like T-Cell Lymphoma Presenting as a Targetoid Plaque in a Pediatric Patient: A Case Report and Review of Literature.
Pediatr Dermatol
January 2025
Department of Dermatology, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
Subcutaneous panniculitis-like T-cell lymphoma (SPTCL) is a rare type of non-Hodgkin lymphoma characterized by subcutaneous nodules, indurated plaques, erythema, and cellular infiltrates in the subcutaneous fat. Biopsies show neoplastic cells expressing cytotoxic T-cell markers and displaying moderate cytologic atypia while sparing the dermis and epidermis and showing variable degrees of necrosis, hemorrhage, and inflammatory changes. We describe a pediatric case of SPTCL in a 6-year-old boy, presenting with an unusual targetoid plaque and systemic symptoms, who showed significant improvement on systemic immunosuppressants without chemotherapy.
View Article and Find Full Text PDFBlue Nevus-Like Metastatic Melanoma in a Patient With Primary Lentigo Maligna Melanoma.
J Cutan Pathol
January 2025
Stritch School of Medicine, Loyola University, Maywood, Illinois, USA.
Metastatic melanoma with unusual histopathology can be diagnostically challenging. One exceptionally rare cutaneous manifestation of metastases is blue-nevus-like metastatic melanoma (BNLMM). A 74-year-old male presented with a blue-gray lesion on his left helix in the same anatomical region of a previously resected lentigo maligna.
View Article and Find Full Text PDFA Benign Lesion of Thyroid Masquerading as a Salivary Gland Malignancy on Cytology.
Diagn Cytopathol
December 2024
Department of Pathology, Dr Ram Manohar Lohia Institute of Medical Sciences, Lucknow, Uttar Pradesh, India.
Introduction: Thyroid lesions are one of the most common diseases observed in clinical practice in the North India. These diseases have distinct cytological morphology and thus FNAC is done frequently. Here we report a case of adenomatoid goitre mimicking adenoid cystic carcinoma (ACC) of salivary gland on cytology.
View Article and Find Full Text PDFBilateral Cystic Endosalpingiosis in Cervical Lymph Nodes Mimicking Metastatic Papillary Thyroid Carcinoma Morphologically on Cytology: A Case Report and Literature Review of Diagnostic Challenges.
Diagn Cytopathol
December 2024
Division of Pathology and Laboratory Medicine, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA.
The presence of cystic lymph nodes in the neck can present a challenging differential diagnosis, with considerations often including metastatic papillary thyroid carcinoma (PTC), cystic squamous cell carcinoma, and congenital cysts. The cytologic overlap between benign Müllerian inclusions and PTC features adds complexity, especially in unusual locations. A 45-year-old woman with a history of ovarian serous borderline tumor (SBT) and non-invasive Müllerian implants presented with cystic lymphadenopathy in the neck.
View Article and Find Full Text PDFAdenocarcinoma originating from presumed liver ectopic thyroid in a cat.
JFMS Open Rep
December 2024
Department of Veterinary Sciences, Pisa, Italy.
Case Summary: Ectopic thyroid tissue is rarely reported in dogs and cats in its prediaphragmatic location and has never been described in the liver. A 15-year-old spayed female domestic shorthair cat was diagnosed by ultrasound with a heterogeneous hypoechoic nodular area in the liver at the periphery of the quadrate lobe. A generic diagnosis of carcinoma was made after ultrasound-guided fine-needle aspiration and cytological examination.
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